DARLINGTON, S.C. (AP) -- Greg Biffle's chances of winning a race he dominated appeared gone after his Roush Racing team made some late-race changes.

But a timely spin by Mark Martin and four fresh tires were all Biffle needed to win Saturday night's Nextel Cup race at Darlington Raceway in overtime.

"The second-to-last run there we tried some tire pressure things and got my car way too loose," Biffle said. "I thought, 'Why in the world would we wait until the last run to try something?' It went the wrong way, but we recovered from that."

Biffle, who led 176 of 370 Laps on the treacherous 1.366-mile, egg-shaped Darlington oval, fell behind on a late pit stop, but got another chance when Martin spun, bringing out the 12th caution flag just five Laps from the scheduled finish. More